he will do Af and timing, "tip in" and a few other trick to get whatever he can. A maf trans will do a little. But you can only really adjust the AF across the board with that and of course cant do timing and the other stuff. If you only need to fatten up the fuel curve at peak TQ he can do that. The MAFT can only fatten the entire rpm range.
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if it's cheap & reliable, it ain't fast, if it's fast & cheap, it ain't reliable, if it's fast & reliable, it ain't cheap